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	<title>Tanári segédanyagok 8. osztályosoknak &#8211; K&eacute;m-lelő.hu</title>
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	<description>Term&#233;szettudom&#225;ny tizen&#233;veseknek</description>
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	<title>Tanári segédanyagok 8. osztályosoknak &#8211; K&eacute;m-lelő.hu</title>
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		<title>A vizek keménysége és a vízlágyítás</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/a-vizek-kemenysege-es-a-vizlagyitas/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=a-vizek-kemenysege-es-a-vizlagyitas</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Sun, 29 Mar 2020 06:43:02 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
		<guid isPermaLink="false">http://www.xn--km-lel-bva15f.hu/?p=983</guid>

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		<title>Az idegrendszerre ható anyagok &#8211; 2.</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/az-idegrendszerre-hato-anyagok-2/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=az-idegrendszerre-hato-anyagok-2</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Sun, 22 Mar 2020 16:54:47 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
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		<item>
		<title>Az idegrendszerre ható anyagok 1.</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/az-idegrendszerre-hato-anyagok-1/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=az-idegrendszerre-hato-anyagok-1</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Sun, 22 Mar 2020 16:53:38 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
		<guid isPermaLink="false">http://www.xn--km-lel-bva15f.hu/?p=862</guid>

					<description><![CDATA[]]></description>
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		<item>
		<title>Gyógyszereink</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/gyogyszereink-2/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=gyogyszereink-2</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Fri, 20 Mar 2020 10:33:30 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
		<guid isPermaLink="false">http://www.xn--km-lel-bva15f.hu/?p=842</guid>

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		<title>Gyógynövények</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/gyogynovenyek-2/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=gyogynovenyek-2</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Fri, 20 Mar 2020 10:27:47 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
		<guid isPermaLink="false">http://www.xn--km-lel-bva15f.hu/?p=834</guid>

					<description><![CDATA[]]></description>
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		<item>
		<title>Gyógyító szereink</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/gyogyito-szereink/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=gyogyito-szereink</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Fri, 20 Mar 2020 10:26:31 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
		<guid isPermaLink="false">http://www.xn--km-lel-bva15f.hu/?p=830</guid>

					<description><![CDATA[]]></description>
										<content:encoded><![CDATA[<div class="ead-preview"><div class="ead-document" style="position: relative;padding-top: 90%;"><iframe src="//view.officeapps.live.com/op/embed.aspx?src=http%3A%2F%2Fwww.xn--km-lel-bva15f.hu%2Fwp-content%2Fuploads%2F2020%2F03%2Fa-4.2-GY%C3%93GY%C3%8DT%C3%93-SZEREINK.pptx" title="Embedded Document" class="ead-iframe" style="width: 100%;height: 100%;border: none;position: absolute;left: 0;top: 0;"></iframe></div><p class="embed_download"><a href="http://www.xn--km-lel-bva15f.hu/wp-content/uploads/2020/03/a-4.2-GYÓGYÍTÓ-SZEREINK.pptx" download>Download </a></p></div>
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		<item>
		<title>Miből építsük fel házainkat?</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/817/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=817</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Wed, 27 Nov 2019 17:51:13 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
		<guid isPermaLink="false">http://www.xn--km-lel-bva15f.hu/?p=817</guid>

					<description><![CDATA[]]></description>
										<content:encoded><![CDATA[<div class="ead-preview"><div class="ead-document" style="position: relative;"><iframe src="//view.officeapps.live.com/op/embed.aspx?src=http%3A%2F%2Fwww.xn--km-lel-bva15f.hu%2Fwp-content%2Fuploads%2F2019%2F11%2Fa-3.1-MIB%C5%90L-%C3%89P%C3%8DTS%C3%9CK-FEL-H%C3%81ZAINKAT.pptx" title="Embedded Document" class="ead-iframe" style="width: 50%;height: 50%;border: none;min-height: 500px;"></iframe></div><p class="embed_download"><a href="http://www.xn--km-lel-bva15f.hu/wp-content/uploads/2019/11/a-3.1-MIBŐL-ÉPÍTSÜK-FEL-HÁZAINKAT.pptx" download>Download </a></p></div>
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		<title>Fémek az ércekből</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/femek-az-ercekbol/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=femek-az-ercekbol</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Wed, 27 Nov 2019 17:50:20 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
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					<description><![CDATA[Azt a kőzetet, amelyből egy fém gazdaságosan kinyerhető, ércnek nevezzük. A fémek előállításának három lépése a dúsítás, a redukció és a tisztítás. A tiszta fémeket ötvözhetik is. A vasgyártás során a vasércek szenes redukciójával jutnak a nyersvashoz. Ennek széntartalmát csökkentve acélt kapunk. Az alumínium érce a bauxit. Ebből első lépésben timföldet, majd annak olvadékából elektromos [&#8230;]]]></description>
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.elementor-element.elementor-element-5d6b11e{bottom:0px;}}</style>							<content:encoded><![CDATA[		<div data-elementor-type="wp-post" data-elementor-id="812" class="elementor elementor-812" data-elementor-post-type="post">
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									<p>Azt a kőzetet, amelyből egy fém gazdaságosan kinyerhető, ércnek nevezzük. A fémek előállításának<br />három lépése a dúsítás, a redukció és a tisztítás. A tiszta fémeket ötvözhetik is. A vasgyártás során a vasércek szenes redukciójával jutnak a nyersvashoz. Ennek széntartalmát csökkentve acélt kapunk. Az alumínium érce a bauxit. Ebből első lépésben timföldet, majd annak olvadékából elektromos árammal alumíniumot állítanak elő.</p><p>1. Mit nevezünk ércnek? Mondj példát!<br />2. Milyen redukciós eljárásokat használunk a fémek előállítására?<br />3. Hogyan jelenik meg a dúsítás, a redukció és a tisztítás<br />a) a vas gyártása során,<br />b) az alumínium gyártása során?<br />4. Mi a különbség a nyersvas és az acél összetételében és tulajdonságaiban?</p>								</div>
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		<item>
		<title>Egy veszélyes anyag: a kénsav</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/egy-veszelyes-anyag-a-kensav/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=egy-veszelyes-anyag-a-kensav</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Tue, 19 Feb 2019 17:14:37 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
		<guid isPermaLink="false">http://www.xn--km-lel-bva15f.hu/?p=764</guid>

					<description><![CDATA[A kénsav színtelen, szagtalan, sűrűn folyó folyadék. Vízzel korlátlanul elegyedik, vizes oldata savas kémhatású. Kétértékű erős sav, amely lúgokkal közömbösíthető. Sói a szulfátok. Jó oxidáló-és vízelvonó szer. Kénből kiindulva állítják elő, a vegyipar egyik legnagyobb tömegben használt anyaga. 1. Hasonlítsd össze a víz és a kénsav fizikai tulajdonságait! 2. Ismertesd a kénsavgyártás lépéseit! 3. Mi [&#8230;]]]></description>
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									<p>A kénsav színtelen, szagtalan, sűrűn folyó folyadék.<br />Vízzel korlátlanul elegyedik, vizes oldata savas kémhatású. Kétértékű erős sav, amely lúgokkal<br />közömbösíthető. Sói a szulfátok. Jó oxidáló-és vízelvonó szer. Kénből kiindulva állítják<br />elő, a vegyipar egyik legnagyobb tömegben használt anyaga.</p><p>1. Hasonlítsd össze a víz és a kénsav fizikai tulajdonságait!<br />2. Ismertesd a kénsavgyártás lépéseit!<br />3. Mi a kénsav három tanult, jellemző tulajdonsága?<br />Hogyan lehet ezeket kísérletekkel igazolni?<br />4. Ha tömény kénsavas üvegbottal írunk szűrőpapírra, az írás láthatóvá válik. Mi ennek a magyarázata?<br />5. Milyen színű a híg kénsavoldatban a lakmusz, a fenolftalein és a pH-papír?</p>								</div>
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									<span class="elementor-button-text">Szükséged van segítségre?</span>
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		<title>A nitrogéntől a robbanóanyagokig</title>
		<link>https://www.xn--km-lel-bva15f.hu/tanari-segedanyagok-8-oztalyosoknak/a-nitrogentol-a-robbanoanyagokig/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=a-nitrogentol-a-robbanoanyagokig</link>
		
		<dc:creator><![CDATA[Székely Henriett]]></dc:creator>
		<pubDate>Tue, 19 Feb 2019 17:13:09 +0000</pubDate>
				<category><![CDATA[Tanári segédanyagok 8. osztályosoknak]]></category>
		<category><![CDATA[ppt 8]]></category>
		<guid isPermaLink="false">http://www.xn--km-lel-bva15f.hu/?p=762</guid>

					<description><![CDATA[A levegő nitrogénjének átalakításával számos új anyag előállítására nyílt lehetőség. Az ammóniából nitrogén-oxidokon keresztül salétromsav, abból pedig műtrágyák (pl. pétisó) és robbanóanyagok (pl. nitroglicerin) is előállíthatók. 1. Miért nagy jelentőségű a Haber–Bosch-féle ammóniagyártás? 2. Jellemezd az ammónia tulajdonságait! 3. Mely vegyületeken keresztül lesz a nitrogénből salétromsav? 4. Mi a pétisó hatóanyaga? Miért jó nitrogénműtrágya? 5. [&#8230;]]]></description>
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									<p>A levegő nitrogénjének átalakításával számos új<br />anyag előállítására nyílt lehetőség. Az ammóniából<br />nitrogén-oxidokon keresztül salétromsav,<br />abból pedig műtrágyák (pl. pétisó) és robbanóanyagok<br />(pl. nitroglicerin) is előállíthatók.</p><p>1. Miért nagy jelentőségű a Haber–Bosch-féle ammóniagyártás?<br />2. Jellemezd az ammónia tulajdonságait!<br />3. Mely vegyületeken keresztül lesz a nitrogénből salétromsav?<br />4. Mi a pétisó hatóanyaga? Miért jó nitrogénműtrágya?<br />5. Miért hasznos, és miért veszélyes anyag az ammónium-nitrát és a nitroglicerin?</p>								</div>
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